In roff, the escape sequence \: is an optional line break,

so escape a literal non-punctuation colon correctly as \&:.
Required for correct formatting with groff-1.20.1 and Heirloom troff;
strangely, groff-1.15 and mandoc have the same bug here, hiding the error.
"fine" jmc@

While here, change .Dq to .Sq which looks better for single-character
quoting, as suggested by jmc@.

1 files changed, 3 insertions, 3 deletions

diff --git a/games/factor/factor.6 b/games/factor/factor.6
index 93633a23052..d426ccbf779 100644
--- a/games/factor/factor.6
+++ b/games/factor/factor.6
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: factor.6,v 1.11 2007/05/31 19:19:17 jmc Exp $
+.\"	$OpenBSD: factor.6,v 1.12 2011/01/24 00:42:44 schwarze Exp $
 .\"
 .\" Copyright (c) 1989, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -37,7 +37,7 @@
 .\"
 .\"   chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\
 .\"
-.Dd $Mdocdate: May 31 2007 $
+.Dd $Mdocdate: January 24 2011 $
 .Dt FACTOR 6
 .Os
 .Sh NAME
@@ -54,7 +54,7 @@ The
 .Nm
 utility will factor 64-bit positive integers.
 When a number is factored, it is printed, followed by a
-.Dq \: ,
+.Sq \&: ,
 and the list of factors on a single line.
 Factors are listed in ascending order, and are preceded by a space.
 If a factor divides a value more than once, it will be printed